1111043321043 has 4 divisors (see below), whose sum is σ = 1481391094728. Its totient is φ = 740695547360.

The previous prime is 1111043321023. The next prime is 1111043321131. The reversal of 1111043321043 is 3401233401111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111043321043 - 2⁸ = 1111043320787 is a prime.

It is a super-2 number, since 2×1111043321043² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111043321023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185173886838 + ... + 185173886843.

It is an arithmetic number, because the mean of its divisors is an integer number (370347773682).

Almost surely, 2^{1111043321043} is an apocalyptic number.

1111043321043 is a deficient number, since it is larger than the sum of its proper divisors (370347773685).

1111043321043 is an equidigital number, since it uses as much as digits as its factorization.

1111043321043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370347773684.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1111043321043 its reverse (3401233401111), we get a palindrome (4512276722154).

The spelling of 1111043321043 in words is "one trillion, one hundred eleven billion, forty-three million, three hundred twenty-one thousand, forty-three".